The time taken by two consecutive compressions or rarefactions to cross a fixed point is called_______________.

The name of the symbol λ is ____ and it is used for _____.

1. Lambda, wavelength
2. Nu, frequency
3. Lambda, frequency
4. Nu, wavelength

The upper portion of the graphical representation of the wave represent the ____.

1. Compressions
2. Rarefactions
3. Troughs
4. All of the above

A peak is called a ____ and a valley is called a ____ of a wave.

1. Crest, crest
2. Trough, trough
3. Crest, trough
4. Trough, crest

A trough represents ______.

1. Maximum compression
2. Minimum compression
3. Minimum rarefaction
4. None of the above

A crest represents _____.

1. Maximum compression
2. Minimum compression
3. Maximum rarefaction
4. None of the above

The frequency of a sound wave is ____ to its time period.

1. Perpendicular
2. Equal
3. Reciprocal
4. Corresponds 

The name of the symbol ν is ____ and it is used for _____.

1. Lambda, wavelength
2. Nu, frequency
3. Lambda, frequency
4. Nu, wavelength

The SI unit of wavelength is ____.

1. Meters
2. Hertz 
3. Seconds
4. Quartz  

The SI unit of frequency is ____.

1. Meters
2. Hertz 
3. Seconds
4. Quartz  

In the graphical representation of sound waves ____ formed.

1. Only crests are
2. Only troughs are
3. Both crests and troughs are
4. None of the above

The angle between the direction of vibration of particles and the direction of propagation of a longitudinal wave is ____ degrees.

One end of a slinky was fixed to a wall. Its free end was moved back and forth continuously. What kind of wave does the pattern formed in the slinky represent?

1. Transverse wave
2. Longitudinal wave
3. Both 1 and 2
4. None of the above

Density variations are not caused among the particles of the medium when they vibrate ____ the direction of the wave propagation.

1. In
2. At 30-degree angle to
3. At 90-degree angle to
4. At 135-degree angle to

Pressure variations are caused among the particles of the medium when they vibrate _____ the direction of wave propagation.

1. In
2. At 30-degree angle to
3. At 90-degree angle to
4. At 135-degree angle to

Which of the following is not a consequence of longitudinal waves propagating through a medium?

1. Pressure variations
2. Density variations
3. Compressions and rarefactions
4. None of the above